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September Weather in Zemen, Bulgaria

Last updated: August 22, 2025

In September, the average temperature in Zemen, Bulgaria hovers around 16°C (61°F), offering a mild climate. However, be prepared for a range in temperatures that can dip to a brisk -1°C (31°F) or rise as high as a warm 32°C (89°F). Expect a total precipitation of 41 mm (1.6 in) spread over 6 days, with an average humidity level of 59%.

September Temperature in Zemen

In September in Zemen, the average temperature is 16°C (61°F). Maximums can reach 32°C (89°F) and minimums can be as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling to Zemen during this time.

September Weather in Zemen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Zemen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Zemen, September typically has an average temperature of 16°C (61°F), with highs reaching up to 32°C (89°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec303640485763686961514235
Data source: Temperature data for Zemen generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Zemen

In Zemen in September, the precipitation amount is 41 mm (1.6 in) over the course of 6 days.

September Precipitation Trends in Zemen

The chart displays monthly precipitation patterns in Zemen, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Zemen, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec645387728097844241544592
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Zemen

In Zemen in September, humidity is 59%. With an average temperature of 16°C (61°F), this humidity feels like a refreshing yet slightly damp embrace, making it a comfortable time for sightseeing and exploring, although you might want to carry a light jacket for the occasional chill.

September Average Humidity in Zemen

This chart illustrates the average monthly humidity levels in Zemen, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Zemen is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%85%83%71%73%67%68%50%59%79%87%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Zemen

In Zemen in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Zemen.

Maximum UV Index Levels in Zemen for September

The chart shows the monthly maximum UV Index (UVI) for Zemen in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Zemen typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24789101097632
Data source: Zemen September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Zemen Compares to Other Months

Weather in Zemen varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Zemen, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Zemen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)64 mm (2.5 inches)89%low
February Weather2°C (36°F)53 mm (2.1 inches)85%moderate
March Weather5°C (41°F)87 mm (3.4 inches)83%high
April Weather9°C (49°F)72 mm (2.8 inches)71%very high
May Weather14°C (57°F)80 mm (3.1 inches)73%very high
June Weather17°C (64°F)97 mm (3.8 inches)67%very high
July Weather20°C (68°F)84 mm (3.3 inches)68%very high
August Weather20°C (69°F)42 mm (1.6 inches)50%very high
September Weather16°C (61°F)41 mm (1.6 inches)59%high
October Weather10°C (51°F)54 mm (2.1 inches)79%high
November Weather6°C (43°F)45 mm (1.8 inches)87%moderate
December Weather1°C (35°F)92 mm (3.6 inches)89%low

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